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# -*- coding: utf-8 -*-

"""

Created on Tue Nov 16 10:07:34 2021

@author: mjach

"""

# map function in python

# Advantage

# It is more efficient than python noraml for loop.

# Reduce memory consumption. With python for loop it store whole list or set or tuple into your system,

# where map only gets one item at a gieven time in your system memory.

# How to write map syntax?

# map(function, iterable,....)

# Here, the function does some action with the iterable items.

# How map works?

# It takes two parameters(required) but you can pass more than one iterable as many as you like

# but make sure function has a parameter for each iterable.

# Map returns an object of a map class but you need to convert it to either list or set and so no

#Exmple 1

number_one_list = [2,3,4,5,6]

number_two_list = [7,8,9,10,11]

square_list_items = []

for number in number_one_list:

square_list_items.append(number ** 2)

#print('Square list items:',square_list_items)

#Example 2

def square_list_items(number):

return number * number

result = map(square_list_items, number_one_list )

#print('Memory location address: ', result)

#print(list(result))

#Example 3

def add_list_items(number1, number2):

return number1 + number2

add_result_items = map(add_list_items, number_one_list, number_two_list)

print('Adding two list items:', list(add_result_items))

#Example 4

# We can pass any of the built in function into map as a first argument

string_items = ['1','2','3']

convert_int = map(int,string_items)

print('Converted int items',list(convert_int))

convert_float = map(float,string_items)

print('Converted float items',list(convert_float))

int_items = [1,2,3,4]

convert_str = map(str,int_items)

print('Int to string:', list(convert_str))

#Example 5

string_list = ['Welcome', 'to', 'my', 'channel']

print('Length of the each string:',list(map(len,string_list)))

#Example 5

#number_one_list = [2,3,4,5,6]

lambda_result = map(lambda num: num * num, number_one_list)

print('Lambda result:', list(lambda_result))

#Example 6

my_string = ['I' , 'like', 'python']

result = map(str.capitalize, my_string)

str_result = list(result)

print('Word capital:',str_result)

print('All uppercase:', list(map(str.upper, my_string)))

print('All lowercase:', list(map(str.lower, my_string)))

#print('REmove whit espace:', list(map(str.strip, my_string)))